$theme-color :#3085fc; //这是一个变量名
$theme-primary: #3085fc;
$theme-success: #06C38B;
$theme-warning: #EEA84E;
$theme-error: #EE4E4E;
 
//主要的一步：
:export {
  color:$theme-color;
  primary:$theme-primary;
  success:$theme-success;
  warning:$theme-warning;
  error:$theme-error;
}
